A device for controlling the passage of fluid through a pipe or duct, esp. an automatic device allowing movement in one direction only
A membranous fold in a hollow organ or tubular structure, such as a blood vessel or the digestive tract, that maintains the flow of the contents in one direction by closing in response to any pressure from reverse flow
a structure in a hollow organ (like the heart) with a flap to insure one-way flow of fluid through it
A cylindrical mechanism in a brass instrument that, when depressed or turned, admits air into different sections of tubing and so extends the range of available notes
device in a brass wind instrument for varying the length of the air column to alter the pitch of a tone
control consisting of a mechanical device for controlling the flow of a fluid
Pentavalent Rotavirus Vaccine (i.e., RotaTeq®)
The Waterstone Faucets Pressure Regulating Valve is an inline valve that mechanically reduces a higher pressure of water coming from the house source down to a maximum of 60 psi or lower. This valve is used to protect the Waterstone Faucets Hot Tank from excessive household water pressure damage.
Sometimes used as an abbreviation for Preference Voting. See "Choice Voting".